GB2022306B - Mn-zn single crystalline ferrite head and a method of making the same - Google Patents

Mn-zn single crystalline ferrite head and a method of making the same

Info

Publication number
GB2022306B
GB2022306B GB7908572A GB7908572A GB2022306B GB 2022306 B GB2022306 B GB 2022306B GB 7908572 A GB7908572 A GB 7908572A GB 7908572 A GB7908572 A GB 7908572A GB 2022306 B GB2022306 B GB 2022306B
Authority
GB
United Kingdom
Prior art keywords
making
same
single crystalline
ferrite head
crystalline ferrite
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB7908572A
Other versions
GB2022306A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Akai Electric Co Ltd
Original Assignee
Akai Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Akai Electric Co Ltd filed Critical Akai Electric Co Ltd
Publication of GB2022306A publication Critical patent/GB2022306A/en
Application granted granted Critical
Publication of GB2022306B publication Critical patent/GB2022306B/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/2658—Other ferrites containing manganese or zinc, e.g. Mn-Zn ferrites
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • G11B5/193—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features the pole pieces being ferrite or other magnetic particles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/58—Processes of forming magnets

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Magnetic Heads (AREA)
  • Soft Magnetic Materials (AREA)
  • Magnetic Ceramics (AREA)
GB7908572A 1978-03-13 1979-03-12 Mn-zn single crystalline ferrite head and a method of making the same Expired GB2022306B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2887378A JPS54121108A (en) 1978-03-13 1978-03-13 Mnnzn ferrite monocrystal magnetic head and method of fabricating same

Publications (2)

Publication Number Publication Date
GB2022306A GB2022306A (en) 1979-12-12
GB2022306B true GB2022306B (en) 1982-06-23

Family

ID=12260489

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7908572A Expired GB2022306B (en) 1978-03-13 1979-03-12 Mn-zn single crystalline ferrite head and a method of making the same

Country Status (5)

Country Link
US (2) US4285894A (en)
JP (1) JPS54121108A (en)
DE (1) DE2909280C2 (en)
GB (1) GB2022306B (en)
NL (1) NL182255C (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54121108A (en) * 1978-03-13 1979-09-20 Akai Electric Mnnzn ferrite monocrystal magnetic head and method of fabricating same
JPS5683008A (en) * 1979-12-12 1981-07-07 Hitachi Metals Ltd Single crystal ferrite
JPS56163518A (en) * 1980-05-16 1981-12-16 Hitachi Ltd Magnetic head
NL8200481A (en) * 1982-02-09 1983-09-01 Philips Nv MAGNETIC HEAD.
US4418473A (en) * 1982-03-26 1983-12-06 International Business Machines Corp. Method of making edge protected ferrite core
DE3316747A1 (en) * 1983-05-07 1984-11-08 Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig & Co KG, 8510 Fürth MAGNETIC HEAD AND METHOD FOR THE PRODUCTION THEREOF
US4649448A (en) * 1983-06-03 1987-03-10 Hitachi, Ltd. Thin film magnetic head having a sliding surface
JPS60138708A (en) * 1983-12-27 1985-07-23 Ngk Insulators Ltd Magnetic head core and its manufacture
CN1008844B (en) * 1984-10-02 1990-07-18 株式会社日立制作所 Thin film head slider fabrication and the method for preparing the thin film head slider fabrication material
DE3538475A1 (en) * 1984-10-31 1986-05-07 Pioneer Electronic Corp., Tokio/Tokyo COMPOSED MAGNETIC MATERIAL
JPH0785291B2 (en) * 1986-07-07 1995-09-13 ソニー株式会社 Magnetic head
JPS63211605A (en) * 1987-02-26 1988-09-02 Shin Etsu Chem Co Ltd Manufacture of ferrite single crystal
JPS6419508A (en) * 1987-07-14 1989-01-23 Victor Company Of Japan Magnetic head
KR910009026B1 (en) * 1987-10-09 1991-10-28 알프스 덴기 가부시기가이샤 Magnetic head and manufacturing method
NL8801439A (en) * 1988-06-06 1990-01-02 Philips Nv METHOD FOR CONNECTING A METAL OXIDE WITH A METAL
ATE151555T1 (en) * 1991-11-04 1997-04-15 Philips Electronics Nv MAGNET HEAD WITH CORE PART MADE OF POLYCRYSTALLINE MNZN FERROFERRITE
KR0157323B1 (en) * 1991-12-31 1999-02-18 황선두 Process and apparatus for mn-zn ferrite signal crystal formation using regional melting zone forming method
KR960012995B1 (en) * 1993-03-31 1996-09-25 엘지전자 주식회사 Single crystal ferrite
US7137190B2 (en) * 2002-10-03 2006-11-21 Hitachi Global Storage Technologies Netherlands B.V. Method for fabricating a magnetic transducer with a corrosion resistant layer on metallic thin films by nitrogen exposure
US8837082B2 (en) 2012-04-27 2014-09-16 International Business Machines Corporation Magnetic recording head having quilted-type coating
US9036297B2 (en) 2012-08-31 2015-05-19 International Business Machines Corporation Magnetic recording head having protected reader sensors and near zero recession writer poles
US8780496B2 (en) * 2012-09-21 2014-07-15 International Business Machines Corporation Device such as magnetic head having hardened dielectric portions

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3629519A (en) * 1967-05-23 1971-12-21 Rca Corp Magnetic heads with poles joined by molecular transport bonding
JPS5318718B1 (en) * 1967-09-26 1978-06-16
US3663767A (en) * 1968-11-16 1972-05-16 Tokyo Shibaura Electric Co Magnetic head
US3624897A (en) * 1969-07-25 1971-12-07 Bell & Howell Co Method of making a ferrite head
DE2164465C2 (en) * 1970-12-27 1985-09-19 Akai Electric Co. Ltd., Tokio/Tokyo Mn-Zn ferrites for magnetic recording and playback heads
US3739445A (en) * 1970-12-29 1973-06-19 Chromalloy American Corp Powder metal magnetic pole piece
US3824685A (en) * 1972-02-14 1974-07-23 Bell & Howell Co Method of making a ferrite head
JPS51135521A (en) * 1975-05-20 1976-11-24 Fuji Photo Film Co Ltd Magnetic recording reproduction device
DE2536535C3 (en) * 1975-08-16 1978-10-12 Basf Ag, 6700 Ludwigshafen Process for reducing corrosion on the reactors for the synthesis of chromium dioxide
AU1595776A (en) * 1975-08-18 1978-01-19 Olin Corp Regulating anode-cathode spacing in an electrolytic cell
US4093688A (en) * 1975-08-25 1978-06-06 Memorex Corporation Method of making manganese-zinc ferrite
AT365804B (en) * 1977-12-20 1982-02-25 Bogen Wolfgang ABRASION RESISTANT MAGNETIC HEAD
JPS54121108A (en) * 1978-03-13 1979-09-20 Akai Electric Mnnzn ferrite monocrystal magnetic head and method of fabricating same

Also Published As

Publication number Publication date
DE2909280A1 (en) 1979-10-11
NL7901988A (en) 1979-09-17
NL182255B (en) 1987-09-01
GB2022306A (en) 1979-12-12
US4285894A (en) 1981-08-25
DE2909280C2 (en) 1983-11-17
JPS54121108A (en) 1979-09-20
US4409633A (en) 1983-10-11
NL182255C (en) 1988-02-01

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960312